Pump



v Ptented Nov. 20, 1'923 :UNITED STTESP'ATENT OFFICE.

Gmvu A. nUmsoN, .or noUsToN, TEXAS, assonon 'ro 'rmms PUMP a'sUrrLtCOMPANY, or HOUBTON, mm, A conrona'ron or mm. v

PUMP.

ppicfloa filed September 23, 1531. Serial No. 602.721.

To all whom s't may conccrn:

Be it known that I GRANVILLF. A. HUMA-. soN a citizen of the UnitedStates, residing at oustomin the county of Harris and B Statevof Texas,have invented certain new and useful Improvements in a Pump, of whichthe following is a .spccification.

This invention relates to new and useful im' rovements i'n'a punp.

I ne 'object of theinvention is to provide a pu'mp of the characterdescribed specially des' ed for the use in deep wells, such as Ollwells, and has more particular relation to a novcl. Construction whe'ebyair, stem or similar -fluids under pressure, 'may be utilized to assistin lifting the fluid, to

be ume'd, from the welh not er object rcsidesin the provision. of apumpwh'ch is so oonstructed thatsaid presure'fluid may be introdced into the'working barrel for cleansing the same :by remo'ing the send and otherclo'gging mat ter which ma collect ther-ein.

With the a ve and other objects in View the invention has particularrelation to* certain'novel features of construction, oper-` ation andarrangement of parte an example of which is given in this specificationand illustrated in the accompanying drawings,

x Figur-es 1 and 2 show vertical sectional views, respectively,iof thetop and bottom of the plnger. v Referrin now more particularly to tho 85drawings, t e numcral 42 desi ates a. valve casing which is connected tot sucker rod 32 by m'eans df a couling 43 which abute against the upperen of the -casing and ,contains the back pressure valve mechanism. 44. Aliner 45'exten'ds up through the rcduoed 'up er en'd of said' casing andis threaded into the couf ling 43, This liner der 46 which abuts 45 inthe upper end o the casing and forms with a tight joint. i t

The lower e'nd of this liner has an enlarged head 48 onto which' therespective sections of..th e .caa'm 42 me` This head separates saidcasingr nto upi; ndlower chmbers 4? and 50.* The d has the verticalpass& ways 51 connectin said chambers and t ie upper chamber wel havethe outlct porte 52 therethrough. The casin:: has suitable inlet valvcsto control the 55. inflow of fluid through the plunger.

The liner 45 has a fluid passageway 53 extending from its upper end downinto the head 48 and which separtes into upwardly inclined duas-54,which lead through the .60 head and terminate in the annuhr groovearound said head beneath the orts 52. The adjacent ends of the sectionsthe casing 42 are spaced apart, forming an annular space which coincideswith said u groove. The ducts 54 are staggered with elaion to thepassageways 51, through the The vnlve casing 42 is-enhrged beneath the'groove 55 and formed with an unnular !0 cuttngi edge 56 which cleansesthc inner' wall of the working barrel and prevcnts sand and otherforeign matter from working in between snidplunger and burrel.

Air, steam and other fluid muy he forced, 15 under pressuq-down throughthe sucker rod 32 past the vnlve 44 and on down through the line' andout through the lucts 54 and the groove 55 in a ring-like sheet andwillpass up' aroumlthe suckerl rod to eo the surface of the ground.carrying the oil, or other fluid. being: pmpwl. out of the well th'usmnterially assistiug the pumping oper- Rtion.

lVhatl claim is a;

The combination with a working burrel of a plunger thei-ein, saidplungcr includin a valve casing whose upper end is reduce a liner,extemlig up through the roduced upper end of sai casmg and formin:: atight joint therewith, nn enlar .d head on the -Iower end of said linert readed into said cesinF and separating the'casin into upper and owerchamhers, said hea heing'provided with 'vertical assageways romieting itending from its uppr end down into said 1 head said paasagewayseparatng into upwary inclined ducts which' .leed'through the he'ad,said casing having an annular In testimony whereof I have signed my paceint which the duts termnate, an name to this specification in thpresence nnular cutting'edge carried by said casing. of two subscribmgwitnesses. beneath said space, 'a tubular .sucker rod GRANVILLE A.HUMASON. oonnected'to theupper 'end of said plunger Witnees-z and adownwardly opening valve 'm" said E. V. HARDWAY; sucker-red. J.A.'Cmm'rnz.

